Steam ejector pump is one equipment that pumps low-pressure fluids with high-pressure steam,and is widely used in far-ranging fields both at home and abroad.The further development technique of SolidWorks based on Visual Basic 6.0,was done to have implemented parameterized design system of the steam ejector pump.The structural dimensions of the steam ejector pump were computed with VB program.And the steam ejector pump model was rebuilt by using SolidWorks API.Thus,the additional and repeated work on such steam pector pump designing were saved.The technique improves the design efficiency of steam ejector pump greatly.